CN101392810B - External adjustable damper valve of oil gas suspension - Google Patents
External adjustable damper valve of oil gas suspension Download PDFInfo
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- CN101392810B CN101392810B CN2008102260652A CN200810226065A CN101392810B CN 101392810 B CN101392810 B CN 101392810B CN 2008102260652 A CN2008102260652 A CN 2008102260652A CN 200810226065 A CN200810226065 A CN 200810226065A CN 101392810 B CN101392810 B CN 101392810B
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Abstract
The invention provides an external adjustable damping valve for an oil-gas suspension, which comprises an external adjustable damping valve body, wherein the valve body is provided with an energy accumulator interface and an oil-gas suspension cylinder interface; an end closure of the valve body is assembled with the external adjustable damping valve body through a fastening bolt; an upper hollow rod and a lower hollow rod are arranged in the valve body; a compression/rebound valve and a control valve with adjustable throttling area are arranged on the side wall of the upper hollow rod, and the compression/rebound valve is arranged on the periphery of the upper hollow rod; a valve plug of the control valve is arranged in the upper hollow rod; the upper end of the compression/rebound valve is provided with a first compression phase damping valve component; a rebound phase damping valve component is arranged between the compression/rebound valve and a spacing disc of the rebound valve; and two ends of the control valve are provided with a second compression phase damping valve component. The external adjustable damping valve has the advantages of good heat dissipation, small outer diameter of the control valve element, simple structure and high reliability.
Description
Technical field:
The present invention relates to the damping member of automobile suspension system, especially at the suspension system that the hydro pneumatic suspension vehicle is housed.The external adjustable damper valve of oil gas suspension that the present invention is designed, the damping force that it produces can be regulated according to pavement behavior.
Background technique:
Hydro-pneumatic spring is because its non-linear and cumulative property change rigidity is having good application prospects aspect special vehicle and the off-road vehicle.It transmits pressure with fluid, therefore, only need add suitable damping device on fluid path, and hydro-pneumatic spring can the double as damping member.Many hydro pneumatic suspensions do not design special damping member, be double as elastic element of hydro-pneumatic spring own and damping member, the damping of this hydro pneumatic suspension is mainly from two aspects, the one, when the wheel bob, fluid forms damping at oil pipe and tubing interface place during to-and-fro motion in hydro-pneumatic suspension system, the 2nd, the gas in the accumulator carries out the energy loss that heat exchange causes with the external world in expansion and compression process, and this part damping is also referred to as this structure damping of hydro-pneumatic spring.For most of vehicles, this part damping force is less relatively, is difficult to satisfy the requirement of the rapid attenuation vibration of vehicle, especially for the off-road vehicle that travels on the bad road surface of being everlasting, only utilizes this part damping force far can not satisfy the requirement of suspension system.Simultaneously, this part damping not only with the structure of hydro pneumatic suspension, arrange relevantly, also relevant with the working condition of hydro pneumatic suspension, external temperature etc., in design process, be difficult to this part damping is estimated.In order to improve the smoothness that the hydro pneumatic suspension vehicle is housed, just be necessary for it and design independently orifice valve.
At present, domestic hydro pneumatic suspension is used for off-road vehicle and load-carrying vehicle more, the road surface situation that it travels is complicated and changeable, if adopt the uncontrollable damping member of damping constant, be difficult in and all obtain run smoothness preferably on the different road surfaces, can influence the average overall travel speed of vehicle like this, and then increase cost of transportation.In addition, for present hydro pneumatic suspension, also exist such problem, because the oil cylinder piston area of hydro pneumatic suspension is bigger, therefore, fluid flow by orifice valve can be very big, when orifice valve is built-in, will run into heat dissipation problem when on bad road, travelling, the too high meeting of oil liquid temperature causes viscosity to reduce, and can have influence on the performance of gas in the accumulator, thereby have influence on the external characteristics of hydro pneumatic suspension.
No. 98111480.6 patent of invention that China announces have been announced a kind of automobile-used hydro-pneumatic spring vibration damper for the first time in advance, and this invention has increased adjustable restrictive valve and accumulator from oleo-pneumatic shock absorber, has formed the hydro-pneumatic spring vibration damper.The vibration damper with oil-gas spring that this invention is announced in advance, when the frequency of excitation during less than 6～7Hz, the proportion of utilization solenoid valve carries out vibration damping as damping member, when the frequency of excitation is higher than 7Hz, utilizes accumulator to carry out vibration damping as damping member.Yet, because this patent of invention is from air oil shock absorber, there is such problem, it must be provided with special elastic element, if with itself as elastic element, that part of active force that then former cause elastic element bears is all born by vibration damper with oil-gas spring, this will certainly increase the pressure of system, and the piston area of vibration damper with oil-gas spring is by the damper piston area decision of its repacking, can be smaller, this can make that the pressure of vibration damper with oil-gas spring is very high, and is very high to the seal request of system, not only increase the cost of system, also reduced the reliability of system.Simultaneously, its more consideration is an effectiveness in vibration suppression of improving vibration damper by the repacking to vibration damper, and the structure to its orifice valve is not elaborated.
Summary of the invention:
The external adjustable damper valve of oil gas suspension that the object of the invention provides at the problems referred to above just with variable damping force characteristic, this external adjustable damper valve of oil gas suspension comprises: an a) external adjustable damper valve valve body (1), valve body are provided with accumulator interface (1a) and hydro pneumatic suspension cylinder interface (1b); B) valve body end cap (15) is by clamping bolt (14) and external adjustable damper valve valve body (1) assembling; C) go up hollow stem (2) for one, hollow stem on this (2) is provided with the first liquid opening (2a), the second liquid opening (2b) and the 3rd liquid opening (2c) that radially penetrates, and two positioning steps in outer wall upper edge axial distribution; The top is provided with the through hole that passes for adjustable lever (17), and bottom interior wall is provided with the internal thread of control valves spool (16) lower end axially locating; D) a following hollow stem (13), its upper half part outer wall is provided with the outside thread of control valves spool (16) axially locating, and lower half portion outer wall is provided with the outside thread that matches with locking nut (12), and the bottom is provided with liquid communication port (13a); E) control valve (5), this control valve are provided with compression phase liquid chunnel (5b) that penetrates vertically and the liquid opening (5d) that radially penetrates; And be respectively equipped with second annular chamber (5e) that is communicated with liquid opening (5d) and first annular chamber (5f) that is communicated with compression phase liquid chunnel (5b), its upper axial end is by last positioning block (3) constraint; F) a control valve spool (16), this control valve spool (16) is a hollow structure, can in last hollow stem (2), rotate, it drives by apply external force on adjustable lever (17), be provided with first lining (19a) and second lining (19b) at the two ends of control valve spool (16), frictional force when rotating in order to reduce control valve spool (16), this control valve spool outer wall diverse location is provided with first through hole (16a) that radially penetrates, second through hole (16b) and third through-hole (16d), and first crack (16c) that radially penetrates and second crack (16e); G) a compression/rebound valve (8), this compression/rebound valve (8) is the periphery that constitutes and be fixed on vertically hollow stem (2) like this, compression/rebound valve (8) along with its axis be the conical surface at center penetrate be provided with compression phase liquid chunnel (8c) and uphold phase place liquid chunnel (8a), and this compression/rebound valve (8) is provided with the middle pressure receiving cavity chamber of extension phase place and is provided with compression phase intermediate pressure reception chamber in the outlet of compression phase fluid passage around the outlet of upholding phase place fluid passage (8a); H) first compression phase damping valve component (7,8d), this component limitations ground fills the fluid of being permitted first chamber (R) and flows into second chamber (S) through compression phase liquid chunnel (8c), compression phase intermediate pressure reception chamber, so that produce a higher damping force herein; I) uphold phase place orifice valve assembly (9,8b), this component limitations ground fills the fluid of being permitted second chamber (S) and receives chamber and flow into first chamber (R) by extension phase place liquid chunnel (8a), extension phase place intermediate pressure, so that produce a higher damping force herein.J) second compression phase damping valve component 1 (4,5a) with 2 (6,5c), this component limitations ground fills the liquid communication port (13a) on the hollow stem (13) under the fluid process of being permitted first chamber (R), first through hole (16a) on the control valve spool (16), second through hole (16b), third through-hole (16d), first crack (16c) and second crack (16e), the first liquid opening (2a) on the last hollow stem (2), the second liquid opening (2b) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), flow into second chamber (S), so that produce relatively low damping force herein.K) holddown spring (11) of upholding phase place, one end of this holddown spring (11) is pressed in rebound valve position-arresting disk (10) surface, the other end is retrained by locking nut (12), can regulate the maximum of compression/rebound valve (8) by adjusting lock nut's (12) position and open the valve height and open valve speed; 1) half-duplex channel of one second compression phase (C), under big damping state, the first liquid opening (2a) on the outer wall of control valve spool (16) and the last hollow stem, the second liquid opening (2b) and the alignment of the 3rd liquid opening (2c), this passage ends; Under middle damping state, this passage by the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, first crack (16c) and second crack (16e) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, first crack (16c) and second crack (16e) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2); This passage by the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, second through hole (16b) and third through-hole (16d) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, the second liquid opening (2b) on second through hole (16b) on the control valve spool (16) and third through-hole (16d), the last hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2); By the boring part of the liquid communication port (13a) of descending hollow stem (13) lower end, last hollow stem (2) and following hollow stem (13), first through hole (16a) on the control valve spool (16), the first liquid opening (2a), second annular chamber (5e), the liquid opening (5d) on the last hollow stem (2), form the second compression phase half-duplex channel, 1 (C
1); M) a compression phase half-duplex channel (D), this passage by first compression phase damping valve component (7,8d), compression phase liquid chunnel (8c), compression phase intermediate pressure receive chamber and constitute; N) half-duplex channel (E) of upholding phase place, this passage by uphold phase place orifice valve assembly (9,8b), uphold phase place liquid chunnel (8a), uphold the phase place intermediate pressure and receive chamber and form.
Beneficial effect
Because it is external that the present invention takes, so good heat dissipation, and the external diameter of its control valve element is less, simple in structure, the reliability height.In addition, this external adjustable damper valve of oil gas suspension can be implemented in first feature locations compression phase and be in big damping state, compression phase is in middle damping state during second feature locations, compression phase is in little damping state during the 3rd feature locations, and can be implemented in the conversion between each state.
Description of drawings
Fig. 1 is an axial section of the present invention;
Fig. 2 is the scheme of installation of external adjustable damper valve of oil gas suspension 22;
Fig. 3 is the top view of external adjustable damper valve valve body 2 shown in Figure 1;
Fig. 4 be control valve 5 shown in Figure 1 vertically partly cut open figure;
Fig. 5 is the plan view of compression/rebound valve 8 shown in Figure 1;
Fig. 6 a be compression/rebound valve 8 shown in Figure 1 along A-A to sectional view;
Fig. 6 b be compression/rebound valve 8 shown in Figure 1 along B-B to sectional view;
Fig. 7 is that described external adjustable damper valve of oil gas suspension is in the liquid chunnel schematic representation when compressing little damping position;
Fig. 8 is the liquid chunnel schematic representation of described external adjustable damper valve of oil gas suspension when being in damping state in the compression;
Fig. 9 is the liquid chunnel figure of described external adjustable damper valve of oil gas suspension when being in the big damping state of compression;
Figure 10 is that described external adjustable damper valve of oil gas suspension is in the liquid chunnel figure when upholding damping state;
Figure 11 a be described control valve element when turning to big damping state along S
2-S
2Sectional drawing;
Figure 11 b be during described control valve element turns to during damping state along S
2-S
2Sectional drawing;
Figure 11 c be described control valve element when turning to little damping state along S
2-S
2Sectional drawing;
Figure 12 a be described control valve element when turning to big damping state along S
1-S
1Sectional drawing;
Figure 12 b be during described control valve element turns to during damping state along S
1-S
1Sectional drawing;
Figure 12 c be described control valve element when turning to little damping state along S
1-S
1Sectional drawing.
Among the figure: 1-external adjustable damper valve valve body, 1a-accumulator interface, 1b-hydro pneumatic suspension cylinder interface, the last hollow stem of 2-, the 2a-first liquid opening, the 2b-second liquid opening, 2c-the 3rd liquid opening, the last positioning block of 3-, 4-the 3rd dish type throttle valve plate, the 5-control valve, the 5a-first auxiliary body, 5b-compression phase liquid chunnel, the 5c-second auxiliary body, 5d-liquid opening, 5e-second annular chamber, 5f-first annular chamber, 6-the 4th dish type throttle valve plate, the 7-second dish type throttle valve plate, 8-compression/rebound valve, 8a-upholds the phase place liquid chunnel, and 8b-upholds the phase place seat, 8c-compression phase liquid chunnel, 8d-compression phase seat, the 9-first dish type throttle valve plate, 10-rebound valve position-arresting disk, the 11-holddown spring, the 12-locking nut, hollow stem under the 13-, 13a-liquid communication port, the 14-clamping bolt, the 15-valve body end cap, 16-control valve spool, 16a-first through hole, 16b-second through hole, 16c-first crack, 16d-third through-hole, 16e-second crack, the 17-adjustable lever, 18a-first seal ring, 18b-second seal ring, 18c-the 3rd seal ring, 18d-the 4th seal ring, 19a-first lining, 19b-second lining, 20a-first adjusts pad, 20b-second adjusts pad, 20c-the 3rd adjusts pad, and 20d-the 4th adjusts pad, 21-accumulator, the 22-external adjustable damper valve of oil gas suspension, 23-hydro pneumatic suspension cylinder, R-first chamber, S-second chamber, the C-second compression phase half-duplex channel, C
1-the second compression phase half-duplex channel 1, C
2-the second compression phase half-duplex channel 2, C
3-the second compression phase half-duplex channel 3, D-compression phase half-duplex channel, E-upholds the phase place half-duplex channel.
Describe the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, described external adjustable damper valve of oil gas suspension (22) comprises a control valve (5) and a compression/rebound valve (8), control valve (5) and compression/rebound valve (8) are fixed on the outer circumferential face of hollow stem (2) vertically, wherein the upper end of control valve (5) is come spacing by positioning step on the last hollow stem (2) and last positioning block (3), second annular chamber (5e) of control valve (5) aligns with the first liquid opening (2a) on the last hollow stem (2), the second liquid opening (2b) on first annular chamber (5f) and the last hollow stem (2), the alignment of the 3rd liquid opening (2c); The upper end of control valve (5) lower end and compression/rebound valve (8) is constrained each other, and the lower end of compression/rebound valve (8) retrains by locking nut (12), and locking nut (12) is fixed on down on the hollow stem (13) by internal thread vertically; All above-mentioned elements are installed in the internal cavities that external adjustable damper valve valve body (1) and valve body end cap (15) formed, external adjustable damper valve valve body (1) assembles by clamping bolt (14) with valve body end cap (15), and the inner space that control valve (5) and compression/rebound valve (8) are formed external adjustable damper valve valve body (1) and valve body end cap (15) is divided into first chamber (R) and second chamber (S) that includes fluid.
External adjustable damper valve of oil gas suspension (22) is between accumulator (21) and the hydro pneumatic suspension cylinder (23), it is connected with accumulator (21) by accumulator interface (1a), be connected with hydro pneumatic suspension cylinder (23) by hydro pneumatic suspension cylinder interface (1b), form the confining liquid circulation flow path of hydro-pneumatic suspension system.
Fig. 4 comprises the first auxiliary body (5a) of second compression phase, and the second auxiliary body (5c) and six are the even compression phase liquid chunnel (5b) of distribution, axial penetration along the circumferential direction.Wherein first assist body (5a), the second auxiliary body (5c) is a parallel form, is separately positioned on the top and bottom of control valve (5), so that form second compression phase damping valve component with throttle valve plate; This control valve also comprises second annular chamber (5e), first annular chamber (5f) and 2 liquid openings (5d) that radially become 180 °, wherein, first annular chamber (5f) communicates with compression phase liquid chunnel (5b), and second annular chamber (5e) communicates with liquid opening (5d).
In addition, the upper surface of control valve (5) is installed the 3rd dish type throttle valve plate (4), and this throttle valve plate and first assists body (5a) near contacting, and forms second compression phase damping valve component 1 (4,5a), so that restrictively fill the flow of liquid mistake of being permitted in the compression phase liquid chunnel (5b).The lower surface of control valve (5) is installed one group of the 4th dish type throttle valve plate (6), this throttle valve plate and second assists body (5c) near contacting, form second compression phase damping valve component 2 (6,5c) so that restrictively fill flow of liquid mistake in the compression phase liquid chunnel (5b) perhaps.By rational design the 3rd dish type throttle valve plate (4) and the 4th dish type throttle valve plate (6), can obtain different control valve damping characteristics.
Shown in Fig. 5, Fig. 6 a, Fig. 6 b, described compression/rebound valve (8) comprising: the extension phase place liquid chunnel (8a) that the conical surface that 8 edges are the center with the valve axis penetrates, its cross section is circular, evenly distributes on circumference, so that make fluid flow into second chamber (S) from first chamber (R); And 8 equally distributed compression phase liquid chunnels of the conical surface (8c) that the edge is the center with the valve axis, its cross section is circular, evenly distributes on circumference, so that make fluid flow into first chamber (R) from second chamber (S).8 extension phase place liquid chunnels and 8 compression phase liquid chunnels are crisscross arranged on compression/rebound valve (8), and the liquid chunnel of adjacent compression phase is 22.5 ° with upholding the phase place liquid chunnel along circumferential angle.In addition, the upper surface tool of compression/rebound valve (8) receives chamber with the compression phase seat (8d) that stretches out from it to form the intermediate pressure that communicates with compression phase liquid chunnel (8c).In contrast, the following table mask of compression/rebound valve (8) receives chamber with the extension phase place seat (8b) that stretches out from it with the intermediate pressure that forms and extension phase place liquid chunnel (8a) communicates.In addition, the upper surface of compression/rebound valve (8) is installed the second dish type throttle valve plate (7), and this throttle valve plate and compression phase seat (8d) form first compression phase damping valve component (7 near contacting, 8d), so that restrictively fill the flow of liquid mistake of being permitted in the compression phase liquid chunnel (8c).The lower surface of compression/rebound valve (8) is installed the first dish type throttle valve plate (9), this throttle valve plate with uphold phase place seat (8b) near contacting, formation extension phase place orifice valve assembly (9,8b), so that restrictively fill the flow of liquid mistake of being permitted to uphold in the phase place liquid chunnel (8a).
External adjustable damper valve of oil gas suspension shown in Figure 1, be provided with uphold phase place orifice valve assembly (9, rebound valve position-arresting disk (10) 8b), it utilizes locking nut (12) to position, by holddown spring (11), control the cracking pressure and the maximum of rebound valve and open the valve height.
External adjustable damper valve of oil gas suspension shown in Figure 1 also is provided with adjusts pad (20a, 20b, 20c, 20d), in order to limit described first, second compression phase and to uphold phase place orifice valve assembly, so that the degree of crook of first, second above-mentioned compression phase and extension phase place orifice valve assembly is less than or equal to its predetermined degree of crook.
External adjustable damper valve of oil gas suspension shown in Figure 1 also is provided with first seal ring (18a), second seal ring (18b), and the 3rd seal ring (18c), the 4th seal ring (18d) is in order to guarantee the sealing of described external adjustable damper valve of oil gas suspension.
A columniform control valve spool (16) inserts the inside of passing hollow stem (2) along axis rotationally, this control valve spool (16) is provided with three groups of liquid openings at the axial diverse location of outer surface, be respectively first through hole (16a), second through hole (16b) and third through-hole (16d), every group comprises and is positioned at two through holes that are mutually 180 ° on the same cross section, simultaneously, with the same cross section of second through hole (16b) on also be provided with two liquid stream cracks that are mutually 180 °, be first crack (16c), with the same cross section of third through-hole (16d) on also be provided with two liquid stream cracks that are mutually 180 °, be second crack (16e), adjacent liquid opening and liquid stream crack angle along the circumferential direction are 60 °, be provided with first lining (19a) at the two ends of control valve spool (16), second lining (19b), frictional force when rotating in order to reduce control valve spool (16), the upper end of control valve spool (16) positions by the inner step of last hollow stem (2), and the lower end positions by following hollow stem (13).Vertically diverse location is provided with three groups of liquid openings on the wall of last hollow stem (2), be respectively the first liquid opening (2a), the second liquid opening (2b) and the 3rd liquid opening (2c), every group comprises and is positioned at two through holes that are mutually 180 ° on the same cross section, two positioning steps in outer wall upper edge axial distribution; The top is provided with the through hole that passes for adjustable lever (17).The outer surface of following hollow stem (13) lower half portion is provided with the screw thread that matches with locking nut (12), and its bottom is provided with liquid communication port (13a), and last hollow stem (2) and following hollow stem (13) are assembled by the internal thread of last hollow stem (2) bottom and the outside thread on following hollow stem (13) top.The adjusting of the damping force of hydro-pneumatic suspension system mainly realizes by the rotation of regulation valve core (16), control valve spool (16) is installed in the hollow stem (2), regulation valve core (16) and adjustable lever (17) Joint, by the driving force of this bar input from stepper motor or other power source (not shown), this stepper motor is according to rotating its rotor from a rotation command signal with a computer control device, and above-mentioned rotation command signal is to produce according to a signal that is vertically fixed on the acceleration transducer on the vehicle body freely.
The first liquid opening (2a), the second liquid opening (2b) and the 3rd liquid opening (2c) that turn to its outer wall and last hollow stem (2) when control valve spool (16) are when aliging, and described external adjustable damper valve is in big damping position.At this moment, the relative position of control valve spool (16), last hollow stem (2) and control valve (5) is shown in Figure 11 a and Figure 12 a, the compression phase half-duplex channel (D) of external adjustable damper valve as shown in Figure 9, fluid in first chamber (R) is by compression phase liquid chunnel (8c), first compression phase damping valve component (7,8d), enter second chamber (S).When control valve spool (16) turn to first crack (16c), second crack (16e) respectively with last hollow stem (2) on the second liquid opening (2b), the 3rd liquid opening (2c) when aliging, described external adjustable damper valve is in middle damping position.At this moment, the relative position of control valve spool (16), last hollow stem (2) and control valve (5) is shown in Figure 11 b and Figure 12 b, fluid in the external adjustable damper valve body is through the second compression phase half-duplex channel (C) of control valve (5) with through the compression phase half-duplex channel (D) of overcompression/rebound valve (8), enter second chamber (S) from first chamber (R), as shown in Figure 8.Compression phase half-duplex channel (D) is by compression phase liquid chunnel (8c), and first compression phase damping valve component (7,8d) form; The second compression phase half-duplex channel (C) comprises two-part: by the liquid communication port (13a) of following hollow stem (13) lower end, go up the boring part of hollow stem (2) and following hollow stem (13), first crack (16c) on the control valve spool (16) and second crack (16e), the upward second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of following hollow stem (13) lower end, go up the boring part of hollow stem (2) and following hollow stem (13), first crack (16c) on the control valve spool (16) and second crack (16e), the upward second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), the first annular chamber 5f, compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2).When control valve spool (16) turn to first through hole (16a), second through hole (16b), third through-hole (16d) respectively with last hollow stem (2) on the first liquid opening (2a), the second liquid opening (2b) and the 3rd liquid opening (2c) when aliging, described external adjustable damper valve is in little damping position.At this moment, the relative position of control valve spool (16), last hollow stem (2) and control valve (5) is shown in Figure 11 c and Figure 12 c, the fluid of external adjustable damper valve is through the second compression phase half-duplex channel (C) of control valve (5) with through the compression phase half-duplex channel (D) of overcompression/rebound valve (8), enter second chamber (S) from first chamber (R), as shown in Figure 7.Compression phase half-duplex channel (D) is by compression phase liquid chunnel (8c), and first compression phase damping valve component (7,8d) form; The second compression phase half-duplex channel (C) comprises three parts: by the liquid communication port (13a) of following hollow stem (13) lower end, go up the boring part of hollow stem (2) and following hollow stem (13), second through hole (16b) on the control valve spool (16) and third through-hole (16d), the upward second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of following hollow stem (13) lower end, go up the boring part of hollow stem (2) and following hollow stem (13), second through hole (16b) on the control valve spool (16) and third through-hole (16d), the upward second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2); By the boring part of the liquid communication port (13a) of descending hollow stem (13) lower end, last hollow stem (2) and following hollow stem (13), first through hole (16a) on the control valve spool (16), the first liquid opening (2a), second annular chamber (5e), the liquid opening (5d) on the last hollow stem (2), form the second compression phase half-duplex channel, 1 (C
1).The extension phase place half-duplex channel (E) of external adjustable damper valve as shown in figure 10, the fluid in second chamber (S) is by upholding phase place liquid chunnel (8a), uphold phase place orifice valve assembly (9,8b), enter into first chamber (R).
The control valve spool size of this invention is little, what guaranteed that external adjustable damper valve can be under different damping power state freely changes and has saved as much as possible manufacture cost, simultaneously because orifice valve is external, improved the radiating condition of damping member, reduced the influence of temperature to the hydro-pneumatic suspension system external characteristics, compression/rebound valve (8) and control valve (5) parallel connection have improved the reliability of damped system.
And because external adjustable damper valve of oil gas suspension is simple in structure, the size of control valve spool (16) is less, makes this control valve element fluid power load torque reduce, and the size of the stepper motor of driving regulator can further reduce, make its overall dimensions reduce, and saved manufacture cost.
Claims (12)
1. an external adjustable damper valve of oil gas suspension comprises valve body, end cap, adjustable lever, holddown spring, it is characterized in that:
A) external adjustable damper valve valve body (1), valve body are provided with accumulator interface (1a) and hydro pneumatic suspension cylinder interface (1b);
B) valve body end cap (15) is by clamping bolt (14) and external adjustable damper valve valve body (1) assembling;
C) hollow stem (2) and following hollow stem (13) are housed in the valve body, compression/rebound valve (8) and the adjustable control valve (5) of area of passage are housed at last hollow stem (2) sidewall;
D) control valve spool (16) is housed in last hollow stem, transmits extraneous driving force by adjustable lever (17);
E) be provided with in compression/rebound valve (8) upper end first compression phase damping valve component (7,8d);
F) between compression/rebound valve (8) and rebound valve position-arresting disk (10), be equipped with uphold phase place orifice valve assembly (9,8b);
G) respectively be provided with one second compression phase damping valve component at the two ends of control valve (5), be respectively second compression phase damping valve component 1 (4,5a) and second compression phase damping valve component 2 (6,5c).
2. external adjustable damper valve of oil gas suspension as claimed in claim 1, it is characterized in that, control valve (5) and compression/rebound valve (8) are divided into first chamber (R) and second chamber (S) that comprises damping liquid with the inside of valve body, first chamber (R) is gone up oil gas suspension cylinder interface (1b) by valve body (1) and is communicated with hydro pneumatic suspension cylinder (23), and second chamber (S) communicates with accumulator (21) by accumulator interface (1a).
3. external adjustable damper valve of oil gas suspension as claimed in claim 1, it is characterized in that, described extension phase place orifice valve assembly (9,8b) comprise overlapped setting and be installed in the first dish type throttle valve plate (9) of hollow stem (2) sidewall, the extension phase place seat (8b) of the radial surface of the first dish type throttle valve plate (9) and compression/rebound valve (8) limits upholds the phase place intermediate pressure and receives chamber, compression/rebound valve (8) have with first dish type throttle valve plate (9) the radial surface end near the extension phase place seat (8b) that contacts; First compression phase damping valve component (7,8d) comprise overlapped setting and be installed in the second dish type throttle valve plate (7) of hollow stem (2) sidewall, the compression phase seat (8d) of the radial surface of the second dish type throttle valve plate (7) and compression/rebound valve (8) limits the compression phase intermediate pressure and receives chamber, compression/rebound valve (8) have with second dish type throttle valve plate (7) the radial surface end near the compression phase seat (8d) that contacts; Second compression phase damping valve component 1 (4,5a) comprise overlapped setting and be installed in the 3rd dish type throttle valve plate (4) of hollow stem (2) sidewall, the first auxiliary body (5a) of the radial surface of the 3rd dish type throttle valve plate (4) and control valve (5) limits the second phase place intermediate pressure and receives chamber, control valve (5) have with the 3rd dish type throttle valve plate (4) radial surface end near the first auxiliary body (5a) that contacts, second compression phase damping valve component 2 (6,5c) comprise overlapped setting and be installed in the 4th dish type throttle valve plate (6) of hollow stem (2) sidewall, control valve (5) have with the 4th dish type throttle valve plate (6) radial surface end near the second auxiliary body (5c) that contacts.
4. external adjustable damper valve of oil gas suspension as claimed in claim 1, it is characterized in that, last hollow stem (2) is provided with three liquid openings that radially penetrate, be respectively the first liquid opening (2a), the second liquid opening (2b) and the 3rd liquid opening (2c), and two positioning steps in outer wall upper edge axial distribution; The top is provided with the through hole that passes for adjustable lever (17), and bottom interior wall is provided with the internal thread of control valves spool (16) lower end axially locating; Following hollow stem (13) upper half part outer wall is provided with the outside thread of control valves spool (16) axially locating, and lower half portion outer wall is provided with the outside thread that matches with locking nut (12), and the bottom is provided with liquid communication port (13a); Control valve (5) is provided with compression phase liquid chunnel (5b) that penetrates vertically and the liquid opening (5d) that radially penetrates, and is provided with first annular chamber (5f) that is communicated with compression phase liquid chunnel (5b) and second annular chamber (5e) that is communicated with liquid opening (5d); Its upper axial end is by last positioning block (3) constraint; Control valve spool (16) is a hollow structure, can in last hollow stem (2), rotate, respectively be provided with a lining at the two ends of control valve spool (16), be respectively first lining (19a) and second lining (19b), this control valve spool outer wall diverse location is provided with three through holes that radially penetrate, and is respectively first through hole (16a), second through hole (16b) and third through-hole (16d), and two cracks that radially penetrate, be respectively first crack (16c) and second crack (16e); Compression/rebound valve (8) is fixed on the periphery of hollow stem (2) vertically, compression/rebound valve (8) is provided with compression phase liquid chunnel (8c) and upholds phase place liquid chunnel (8a) along the conical surface that with its axis is center line, this compression/rebound valve (8) is provided with the pressure receiving cavity chamber of upholding in the middle of the phase place around the outlet of described extension phase place liquid chunnel (8a), is provided with the compression phase intermediate pressure in the outlet of described compression phase liquid chunnel (8c) and receives chamber.
5. external adjustable damper valve of oil gas suspension as claimed in claim 1 is characterized in that, on rebound valve position-arresting disk (10) surface holddown spring (11) is housed, and the one end is pressed in rebound valve position-arresting disk (10) surface, and the other end is retrained by locking nut (12).
6. external adjustable damper valve of oil gas suspension as claimed in claim 4, it is characterized in that, control valve (5), second compression phase damping valve component 1 (4,5a) with second compression phase damping valve component 2 (6,5c) form the second compression phase half-duplex channel (C), under big damping state, the first liquid opening (2a) on the outer wall of control valve spool (16) and the last hollow stem, the second liquid opening (2b) and the alignment of the 3rd liquid opening (2c), this passage ends; Under middle damping state, this passage by the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, first crack (16c) and second crack (16e) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, first crack (16c) and second crack (16e) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2); Under little damping state, this passage by the liquid communication port (13a) of following hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, second through hole (16b) and third through-hole (16d) on the control valve spool (16), go up the second liquid opening (2b) on the hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 1 (4,5a), form the second compression phase half-duplex channel, 3 (C
3); By the liquid communication port (13a) of hollow stem (13) lower end, go up hollow stem (2) and following hollow stem (13) boring partly, the second liquid opening (2b) on second through hole (16b) on the control valve spool (16) and third through-hole (16d), the last hollow stem (2) and the 3rd liquid opening (2c), first annular chamber (5f), compression phase liquid chunnel (5b), second compression phase damping valve component 2 (6,5c), form the second compression phase half-duplex channel, 2 (C
2); By the boring part of the liquid communication port (13a) of descending hollow stem (13) lower end, last hollow stem (2) and following hollow stem (13), first through hole (16a) on the control valve spool (16), the first liquid opening (2a), second annular chamber (5e), the liquid opening (5d) on the last hollow stem (2), form the second compression phase half-duplex channel, 1 (C
1).
7. external adjustable damper valve of oil gas suspension as claimed in claim 4 is characterized in that, and first compression phase damping valve component (7,8d), compression phase liquid chunnel (8c), compression phase intermediate pressure receive chamber and constitute compression phase half-duplex channel (D); Uphold phase place orifice valve assembly (9,8b), uphold phase place liquid chunnel (8a), uphold the phase place intermediate pressure and receive chamber and constitute and uphold phase place half-duplex channel (E).
8. external adjustable damper valve of oil gas suspension as claimed in claim 4, it is characterized in that, the described first liquid opening of going up on the hollow stem (2) (2a) aligns with second annular chamber (5e), and the second liquid opening (2b) and the 3rd liquid opening (2c) gone up on the hollow stem (2) align with first annular chamber (5f).
9. external adjustable damper valve of oil gas suspension as claimed in claim 1, it is characterized in that, be equipped with first respectively at the two ends of control valve (5) and compression/rebound valve (8) and adjust pad (20a), second adjusts pad (20b), the 3rd adjusts pad (20c), the 4th adjusts pad (20d), near first compression phase damping valve component (7,8d), uphold phase place orifice valve assembly (9,8b), second compression phase damping valve component 1 (4,5a) and second compression phase damping valve component 2 (6,5c) so that the first above-mentioned compression phase damping valve component (7,8d), uphold phase place orifice valve assembly (9,8b), (4,5a) (6, degree of crook 5c) is less than or equal to its predetermined degree of crook to second compression phase damping valve component 1 with second compression phase damping valve component 2; First seal ring (18a) is housed in external adjustable damper valve of oil gas suspension (22), second seal ring (18b), the 3rd seal ring (18c), the 4th seal ring (18d) is in order to guarantee the sealing of described external adjustable damper valve; At the two ends of control valve spool (16) a copper lining is housed respectively, is respectively first lining (19a) and second lining (19b), the frictional force when rotating in order to reduce control valve spool (16).
10. external adjustable damper valve of oil gas suspension as claimed in claim 6 is characterized in that, the cross section of the compression phase liquid chunnel (5b) of described control valve (5) is circular, and quantity is six, evenly distributes along the circumference of control valve.
11. external adjustable damper valve of oil gas suspension as claimed in claim 7, it is characterized in that, on compression/rebound valve (8), be provided with 8 edges and be extension phase place liquid chunnel (8a) and 8 equally distributed compression phase liquid chunnels of the conical surface (8c) that the edge is the center with the valve axis that the conical surface at center penetrates with the valve axis, the cross section of upholding phase place liquid chunnel (8a) and compression phase liquid chunnel (8c) is circular, on circumference, evenly distribute, 8 extension phase place liquid chunnels and 8 compression phase liquid chunnels are crisscross arranged, and the liquid chunnel of adjacent compression phase is 22.5 ° with extending the phase place liquid chunnel along circumferential angle.
12. external adjustable damper valve of oil gas suspension as claimed in claim 4, it is characterized in that, first through hole (16a) of described control valve spool (16), the centerline of second through hole (16b) and third through-hole (16d) is in a plane crossing its axis, the centerline of first crack (16c) and second crack (16e) is in another plane of crossing its axis, and the angle on two planes is 60 °, the centerline of the first liquid opening (2a) on the center line of first through hole (16a) and the last hollow stem (2) is in the same cross section perpendicular to last hollow stem (2) axis, second through hole (16b), the centerline of the second liquid opening (2b) on the center line of first crack (16c) and the last hollow stem (2) in same cross section perpendicular to last hollow stem (2) axis, third through-hole (16d), the centerline of the 3rd liquid opening (2c) of the center line of second crack (16e) and last hollow stem (2) is in the same cross section perpendicular to last hollow stem (2) axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102260652A CN101392810B (en) | 2008-11-05 | 2008-11-05 | External adjustable damper valve of oil gas suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102260652A CN101392810B (en) | 2008-11-05 | 2008-11-05 | External adjustable damper valve of oil gas suspension |
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| Publication Number | Publication Date |
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| CN101392810A CN101392810A (en) | 2009-03-25 |
| CN101392810B true CN101392810B (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102260652A Expired - Fee Related CN101392810B (en) | 2008-11-05 | 2008-11-05 | External adjustable damper valve of oil gas suspension |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871502B (en) * | 2010-06-22 | 2011-08-31 | 北京理工大学 | Mechanical induction type adjustable damping valve with external oil-gas suspension |
| CN102094927B (en) * | 2011-01-14 | 2012-05-23 | 北京理工大学 | Integral type pneumatic spring with controllable third-level damp and adaptive second-level stiffness |
| CN102644693B (en) * | 2012-05-11 | 2014-10-22 | 株洲时代新材料科技股份有限公司 | Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint |
| DE102012210458B3 (en) * | 2012-06-21 | 2013-09-19 | Zf Friedrichshafen Ag | Adjustable damping valve device for attachment at piston rod of vibration damper, has deflection profile arranged upstream to inflow aperture in flow direction and established on annular element, where aperture is aligned to flow direction |
| CN103225665B (en) * | 2013-05-13 | 2015-04-15 | 南阳淅减汽车减振器有限公司 | Recovery damping valve for shock absorber |
| MA45487A (en) * | 2016-03-15 | 2019-01-23 | Quadro Vehicles S A | IMPROVED SUSPENSION |
| DE112018003806B4 (en) * | 2017-07-27 | 2022-06-23 | Hitachi Astemo, Ltd. | shock absorber |
| CN108443392A (en) * | 2018-04-28 | 2018-08-24 | 南京林业大学 | A kind of displacement correlation variable force variable damping parameter fluid linking damper |
| CN109139775B (en) * | 2018-11-02 | 2024-02-27 | 浙江戈尔德智能悬架股份有限公司 | External damping regulating valve applied to automobile shock absorber |
| US11724769B2 (en) | 2019-12-17 | 2023-08-15 | Sram, Llc | Bicycle suspension components and electronic control devices |
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